Growth and yield of direct seeded rice as influenced by different weed management practices

Abstract

A field experiment was conducted at Main Research Station, Hebbal, Bengaluru during Kharif, 2018 to study the effect of different weed management methods on growth and yield of direct seeded rice. The experiment consisted 11 treatments and replicated thrice in RCBD design. Among various weed management treatments passing cycle weeder and hand weeding at 20 and 35 DAS recorded significantly higher growth and yield parameters of direct seeded rice. However, it was on par with application of triafamone + ethoxysulfuron 30% WG (RM) @ 60 g a.i. ha-1 at 15 DAS followed by passing cycle weeder and hand weeding at 35 DAS or bensulfuron methyl + pretilachlor 6.6% G @ 660 g a.i. ha-1 within 3 DAS followed by passing cycle weeder and hand weeding at 30 DAS. Significantly higher direct seeded rice grain and straw yield was recorded in passing cycle weeder and hand weeding at 20 and 35 DAS (5618 and 7259 kg ha-1, respectively) and found on par with application of triafamone + ethoxysulfuron 30% WG (RM) @ 60 g a.i. ha-1 at 15 DAS followed by passing cycle weeder and hand weeding at 35 DAS (5491 and 7162 kg ha-1, respectively). Weedy check recorded significantly lowest yield (1400 and 2637 kg ha-1, respectively).